Author
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Ludwig, Gerald |
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Submitted to: Proceedings of the International Conference on Recirculating Aquaculture
Publication Type: Proceedings Publication Acceptance Date: 6/15/2004 Publication Date: 7/23/2004 Citation: Ludwig, G.M. 2004. Sunshine bass fingerling culture in tanks. Proceedings of the 5th International Conference on Recirculating Aqauaculture. p. 102-110. Interpretive Summary: Year-round production of fingerlings is a top priority for sunshine bass farmers. Presently fingerlings are produced in ponds but weather prevents winter production. Culture of fry to fingerlings in tanks can be done during the winter but the cost must be reduced for it to be economical. Presently fingerling production requires that live feed, including rotifers and brine shrimp nauplii, be supplied to the fry. New live feed culture methods are helping reduce costs. Concentrated algae pastes may be used instead of live algae for rotifer food. Several products to control ammonia buildup in rotifer and fish cultures have been developed. Proper culture container shape, water filtration and recirculation, oxygen and pH control, continuous feeding and proper harvesting protocols have also increased the efficiency of live food supply. Increased use of highly unsaturated fatty acid enrichment of live feed has increased fry growth. Much research is needed to define an optimum physical, chemical and biological environment. Brood stock development is also needed to develop desirable production characteristics. Technical Abstract: Year-round production of fingerlings is a top priority for sunshine bass farmers. Presently fingerlings are produced in ponds but weather prevents winter production. Culture of fry to fingerlings in tanks can be done during the winter but the cost must be reduced for it to be economical. Presently fingerling production requires that live feed, including rotifers and brine shrimp nauplii, be supplied to the fry. New live feed culture methods are helping reduce costs. Concentrated algae pastes may be used instead of live algae for rotifer food. Several products to control ammonia buildup in rotifer and fish cultures have been developed. Proper culture container shape, water filtration and recirculation, oxygen and pH control, continuous feeding and proper harvesting protocols have also increased the efficiency of live food supply. Increased use of highly unsaturated fatty acid enrichment of live feed has increased fry growth. Much research is needed to define an optimum physical, chemical and biological environment. Brood stock development is also needed to develop desirable production characteristics. |
